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Mathematics, 08.11.2019 18:31 AlexS11
Blake is a songwriter who collects royalties on his songs whenever they are played in a commercial or a movie. blake will earn $20 every time one of his songs is played in a commercial and he will earn $110 every time one of his songs is played in a movie. blake earned a total of $530 in royalties on 13 commercials and movies. determine the number of commercials and the number of movies on which blake's songs were played.
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